New York State Archives, NYSA_A3045-78_B16794
Passengers disembarking an American Airlines plane at the Newark, New Jersey airport, in 1936.
Bingham, Caroline and Anne Millard. The Big Book of Airplanes. DK Publishing, Inc., January 2001. ISBN: 0789465213.
Lopez, Donald. Airplanes (Discovery Series). Barnes & Noble Books, December 2003. ISBN: 0760750718.